Telegraphy.



M. 0. ANTHONY.

TELEGRAPHY.

APPLICATION FILED FEB. 1, 1910.

1,012,231. Patented. Dec.19,1911.

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MARCUS O. ANTHONY, OF ENGLEW'OOD,'NEW JERSEY, ASSIGNOR, BY MESNE ASSIGN- MENTS, T0 CHARLES H. WALKEB, OF NEW YORK, N. Y.

TELEGRAPHY.

Specification of Letters Patent.

Patented Dec. 19, 1911.

Original application filed June 9, 1909, ,Seria1 N 0. 500,838. Divided and this application filed February 1,

To all whom it may concern:

Be it known that I, MARCUS O. ANTHONY, a citizen of the United States of America, residing at Englewood, county of Bergen, State of New Jersey, have invented certain new and useful Improvements in Telegraphy, of which the following is a specification.

My invention relates generally to telegraphy, and comprises an improved apparatus for making, conducting and receiving telegraphic signals.

It is a division of my application Ser. No. 500,838, filed June 9, 1909.

The best form of apparatus embodying my invention at present known to me for making, conducting and receiving ordinary Morse signals, is illustrated in the accompanying drawing in which the induction coils are shown in longitudinal section and the other parts in diagram.

Generally speaking, my invention comprises a sending, or signal generating apparatus A, of peculiar construction, a signal receiving apparatus B, certain of whose features of construction are duplicates of the corresponding portions of the sending apparatus, and a system of connections for the two by line conductor C, with branches such as D if desired. By this apparatus electrical impulses or influences are generated at the sending end, transmitted over a conductor, which need not be insulated and over which other ordinary currents may pass at the same time without interference, and received and indicated at the receiving end by an ordinary telegraph sounder or other signaling device, and all with the consumption of a comparatively small amount of elec trical energy.

In the drawing, 1 represents the spool (made of ordinary insulating material, like gutta percha) of a double wound induction coil having the soft iron core 2, the inner winding 3, and the outer winding 4. The inner winding is of coarse insulated wire (say No. 18) and I usually employ two to four layers of it. The outer winding is of finer insulated wire (say No. 36) and I employ many layers of it (say 150). Of course these sizes and windings may be varied to produce effects of different degree. In order to increase the efficiency of the coil for given lengths of wire, I group the outer Serial No. 541,219.

winding in two portions or collections of coils, w and l connected in series as by wire 8 and wound in the same direction, that is to say, so that a current in traversing the two portions of the coil from one end to the other would travel around the core in the same direction in both portions. These two portions or collect-ions of coils m and y are separated from one another and from the ends of the inner winding by approximately equal spaces. Preferably, the inner winding 3 and the outer winding 4 are so arranged and connected that a current from the same source of supply passing through them would travel in opposite directions around the core 2. To secure this, the windings 3 and 4, as arranged in the diagram, are wound in relatively opposite directions. I believe the apparatus works more effectively when the coils are wound in this manner, though this particular mode of winding is not essential to its operativeness.

6 is a battery or other source of electric current and 7 an ordinary telegraph key, both in the circuit 5 with the inner winding 3. Means for generatinga rapidly and automatically interrupted current of electricity are provided by the vibrating armature 11, located in the field of force of the core 2 of the induction coil, cooperating with the adjustable contact screw 10 mounted in the metallic bracket 9. The armature 11' is spring mounted on the metallic bracket 12. The brackets 9 and 12 serve as terminals for the circuit 5 and around the gap so formed is the shunt circuit 13 in which is the condenser 14. One terminal, as 15, of the outer winding 4 is connected to any convenient portion of the circuit 5 of the inner winding 3, of the induction coil of the sending instrument at A, and the otherterminal 16, is

connected to the line conductor C which has no other connection to either of the coils. At the receiving station B is a second and similar double wound induction coil having the spool 21, soft iron core 22, inner winding 23 of coarse wire, and outer winding 24 of fine wire, arranged in two portions 00 and connected as before. The terminals of the inner winding of this coil are connected to a closed circuit 25, in which may be included any suitable sounding or recording apparatus not shown. One terminal of the outer coil is connected to the line wire O,

and the other to the circuit 25 of the inner coil.

Such being the construction of the preferred form of apparatus the mode of operation of my invention is as follows: The key 7 being depressed, the armature 11 is set in rapid vibration and the circuit 5 through the inner winding of the sending coil is rapidly opened and closed thereby, the spark which might otherwise be generated at contact 10 being largely absorbed by condenser let. The electrical or inductive phenomena thus created in the sending coil transmit their influence over the line conductor C to the coil at the receiving station B, and create a responsive magnetic or electrical action in the sounding or recording apparatus to be connected up in circuit 25. In practice one complete apparatus including portions A and B is usually installed at each station. The line conductor C is branched at D, and the branch D extends to as many other stations as desired, being branched at each such station into a similar sending appara tus A and receiving apparatus B. By suitable selective mechanisms of ordinary construction, any one station can then call up and talk to any other station.

Of course various changes can be made in the details of construction and arrangement of my invention without departing from the principle of operation, though such changes would modify its effectiveness. The windings of the coils may be varied. Other means for generating a constantly varying current of electricity at the sending station may be substituted for the battery and vibrator v circuit breaker shown. But all such modifications would still be within the broad scope of my invention as I understand it.

The apparatus herein described and shown is vastly more eficient than that shown in my prior Patent No. 783,604, dated February 28, 1905. The increase in efficiency seems to largely result from the connection of one terminal of the outer winding of each coil to the inner winding of that coil, instead of leaving same disconnected or blocked off, as described in my said prior patent. Each of the other changes herein described and claimed also contributes its part to the improved results now obtained.

Having, therefore, described my invention, I claim:

1. In an electric telegraph apparatus the combination of means for generating a eur rent of electricity of continuously and rapidly varying quantity and inducing therefrom a current of diiierent tension, said means comprising a double wound induction coil one of the windings of which serves as the path for the generated current while the other winding serves as a path for the induced current, a circuit controlling device capable of producing Morse characters included in the circuit for the generated current, a connection from one terminal of the winding which forms the path for the induced current to the winding which forms the path for the generated current, and a connection from the other terminal to a line conductor which has no other connection to either winding.

2. In an electric telegraph apparatus the combination of means for generating a current of electricity of continuously and rapidly varying quantity and inducing therefrom a current of different tension, said means comprising a double wound induction coil one of the windings of which serves as the path for the generated current while the other winding serves as a path for the induced current, a circuit con trolling device capable of producing Morse characters included in the circuit for the generated current, a connection from one terminal of the winding which forms the path for the induced current to the winding which forms the path for the generated current, and a connection from the other terminal to an uninsulated line conductor which has no other connection to either winding.

3. In an electric telegraph apparatus the combination of means for generating a current of electricity of continuously and rapidly varying quantity and inducing therefrom a current of different tension, said means comprising a double wound induction coil one of the windings of which serves as the path for the generated current while the other winding serves as a path for the induced current, a circuit controlling device capable of producing Morse characters included in the circuit for the generated current, a connection from one ter minal of the winding which forms the path for the induced current to the winding which forms the path for the generated current, and a connection from the other terminal to a line conductor which has no other connection to either winding, the two windings of the coil being applied in opposite directions.

4:. In an electric telegraph system, the combination with a double Wound induction coil having an inner winding and an outer winding and-soft iron core therefor, of a curret generator in circuit with the inner winding, a magnetic circuit making and breaking apparatus in said circuit operatively located with reference to the field of force of said core, a manually operated circuit controlling key in said circuit, a connection from one terminal of the outer winding to the inner winding, and from the other terminal to a line conductor which has no other connection to either windin 5. In an electric telegraph system, the

combination with a double wound induction coil having an inner winding and an outer winding and soft iron core therefor, of a current generator in circuit with the inner winding, a magnetic circuit making and breaking apparatus in said circuit operatively located with reference to the field of force of said core, a manually operated circuit controlling key in said circuit, a connection from one terminal of the outer winding to the inner winding, and from the other terminal to a line conductor, an uninsulated line conductor, and a connection from the other terminal of said outer winding to said line conductor which has no other connection to either winding.

6. In an electric telegraph system, the combination with a double wound induction coil having an inner winding and an outer winding and soft iron core therefor, of a current generator in circuit with the inner winding, a magnetic circuit making and breaking apparatus in said circuit operatively located with reference to the field of force of said core, a manually operated circuit controlling key in said circuit, a connection from one terminal of the outer winding to the inner windin g, and from the other terminal to a line conductor which has no other connection to either winding, the inner and outer windings of the coil being wound in relatively opposite directions.

7 In an electric telegraph system, the combination with a double wound induction coil having an inner winding and an outer winding and soft iron core therefor, of a current generator in circuit with the inner winding, a magnetic circuit making and breaking apparatus in said circuit operatively located with reference to the field of force of said core, a manually operated circuit controlling key in said circuit, a connection from one terminal of the outer winding to the inner winding, and from the other terminal to a line conductor which has no other connection to either winding, together with a condenser in shunt connection around the circuit making and breaking apparatus.

8. In a telegraphic apparatus, the combination with a double wound induction coil having an inner winding and an outer winding, of means for passing a constantly varying quantity of electric current through the inner winding of said coil, a manually operated 'circuit controlling key in circuit with said inner winding and current generating means, a connection from one terminal of the outer winding of the coil to the inner winding, and from the other terminal to a line conductor which has no other connection to either winding.

9. In an electric telegraph apparatus, the combination with a double wound induction coil having an inner winding and an outer winding of means for generating a rapidly varying current of electricity and passing same through one winding of the coil, a circuit controlling device capable of producing Morse characters in circuit with said means and said winding, a connection from one terminal of the other winding of the coil to the first mentioned winding and from the other terminal to a line conductor which has no other connection to either winding.

10. In an electric telegraph apparatus, the combination with a double wound induction coil having an inner winding and an outer winding of means for generating a rapidly varying current of electricity and passing same through one winding of the coil, a connection from one terminal of the other winding of the coil to the first mentioned winding, a connection from the other terminal of the second mentioned Winding to a line conductor which has no other connection to either winding, and a circuit controlling device capable of producing Morse characters in circuit with one of said windings.

MARCUS O. ANTHONY. Witnesses M. K. LOTTERER, M. G. CRAWFORD.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

